EP 0196157 A1 19861001 - Flueric partial pressure sensor.
Title (en)
Flueric partial pressure sensor.
Title (de)
Pneumatischer Partialdrucksensor.
Title (fr)
Palpeur pneumatique de pression partielle.
Publication
Application
Priority
GB 8504567 A 19850222
Abstract (en)
A flueric partical pressure sensor (10) includes a flueric bridge sensor (1 Oa having two bridge legs (11; 12) adapted for sensing a reference-gas and a sample-gas. A linear resistor (14, 15) and an orifice resistor (16, 17) are incorporated in each leg (11; 12) and arranged to cause asymmetric flow rates therethrough. Inlets to the two bridge legs (11; 12) are subject to a datum pressure within a datum pressure chamber (38) so that a change of datum pressure automatically changes control signals output by the sensor (10). The partial pressure sensor (10) is disclosed in combination with a molecular sieve type gas concentration system (24) in an on-board oxygen enrichment of air system for an aircraft and enables the oxygen concentration in oxygen enriched air delivery by the system to be appropriate to breathing requirement at an altitude intermediate aircraft cabin (39) and ambient atmospheric pressures.
IPC 1-7
IPC 8 full level
B01D 53/04 (2006.01); G01N 7/00 (2006.01)
CPC (source: EP US)
B01D 53/0454 (2013.01 - EP US); G01N 7/00 (2013.01 - EP US); Y10T 137/0352 (2015.04 - EP US); Y10T 137/2012 (2015.04 - EP US); Y10T 137/2071 (2015.04 - EP US)
Citation (search report)
- US 4404005 A 19830913 - HAMLIN HUMPHREY A S [GB], et al
- US 4100789 A 19780718 - JOYCE JAMES W
- EP 0129304 A2 19841227 - NORMALAIR GARRETT LTD [GB]
- EP 0036285 A2 19810923 - NORMALAIR GARRETT LTD [GB]
- EP 0013680 A1 19800806 - UNION CARBIDE CORP [US]
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0196157 A1 19861001; EP 0196157 B1 19900711; CA 1250359 A 19890221; DE 3672510 D1 19900816; US 4687013 A 19870818
DOCDB simple family (application)
EP 86300933 A 19860211; CA 501824 A 19860213; DE 3672510 T 19860211; US 82865986 A 19860212